December 5, 2018 3:15pm ESTDecember 5, 2018 3:15pm ESTAmerican Football, English, Emmanuel Sanders, Denver Broncos, NFLSanders was helped off the field and didn't put any weight on his left leg as he was taken into the locker room for further evaluation.Emmanuel Sanders(Getty Images)

According to ESPN, the belief is Sanders tore his Achilles, though the 31-year-old will undergo further testing to confirm his injury.

Broncos believe that WR Emmanuel Sanders tore his Achilles during practice today, per source. Team usually can tell right away, but it will conduct tests on Sanders to confirm. But early belief is torn Achilles.

Sanders was helped off the field and didn't put any weight on his left leg as he was taken into the locker room for further evaluation, per The Gazette of Colorado Springs.

The injury happened early in practice as he went down during passing drills. Sanders slipped when he was making a cut in on a short route and there wasn't anyone around him, 9News reported.

Sanders has made a significant impact this season for the Broncos' offense as he has 71 receptions, almost twice as many has his nearest teammate, for a team-high 868 yards and four touchdowns through 12 games.

The Broncos (6-6) have climbed back into the AFC playoff discussion with a three-game winning streak that they put on the line Sunday against the 49ers in San Francisco.